APPLICATION OF FEEDBACK LINEARIZATION IN THERMORESISTIVE SENSORS CHARACTERIZATION AND FEEDBACK MEASUREMENT SYSTEMS

Joalbo Borges Santos, Amauri Oliveira, Carlos Eduardo Trabuco Dórea, Daniel Gonçalves de Souza Neto,Tanguy Phulpin

Abstract

This paper presents the application of feedback linearization for the characterization of thermoresistive sensors and for feedback measurement systems using these sensors kept at constant temperature. This technique allows the generation of an input signal which is proportional to the electric power of the sensor, simplifies the characterization with the possibility of determining thermal conductance and intrinsic time constant of the sensor in a single test. Concerning the feedback measurement system, this technique improves features of the measurement system with the possibility of use a simple linear controller with good performance in the operation point. Experimental results of characterization and measurement are presented.

Keywords

thermoresistive sensor, closed loop system, characterization of sensor, feedback linearization, virtual instruments

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IMEKO-TC4-2011-033.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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